منابع مشابه
Joint Time-Frequency Domain Reflectometry for Diagnostics of Coaxial Cables
The importance of aging electrical wiring and associated faults in aircraft has been highlighted due to the critical effects on the safety of overall systems. Traditional reflectometry methods for the detection and localization of the faults on cable have been achieved in either the time domain or frequency domain only. In this paper, we introduce a new high-performance reflectometry technique ...
متن کاملPhase Stability of ATA Fiber Optic Cables
The instrumental phase stability of the ATA will be almost entirely a function of the stability of the runs of single-mode fiber optic cables that carry the wideband RF signal band (0.5 to 11.2 GHz) back to the central processing facility. In a more conventional interferometric array, errors in the frequency distribution and elements of the LO system are major contributors to variations in the ...
متن کاملChanges in signal transmission speed in coaxial cables through regulating the foam structure of the polyethylene dielectric section
Polyolefins have been widely used in the electrical insulation and cable industry in recent years. One of the main usages of these materials is dielectric insulation in coaxial cables. Low attenuation and high signal transmission speed are among the desired features in coaxial cables. The role of polyethylene foam on signal transmission speed in the coaxial cables is the main focus of this stud...
متن کاملCalculation of Pulse Propagation in Coaxial Cables with Multi-layered Insulation System
R. Jobava, D. Pommerenke., R. Heinrich**, W. Kalkner**, A. Gheonjian Tbilisi State University, 3 Chavchavadze Ave., Tbilisi 380028, Georgia Fax: ++99532 290845 e-mail: lae@,resonan.ge Hewlett Packard 8000 Foothills Blvd., Roseville, CA, 95747, Mailstop 5603 Fax: 916 685 3082, e-mail: [email protected] "Technical University Berlin Einsteinufer 1 1, 10587 Berlin, Germany Fax: ++49-30-314-211...
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In this paper robust PID control of fully-constrained cable driven parallel manipulators with elastic cables is studied in detail. In dynamic analysis, it is assumed that the dominant dynamics of cable can be approximated by linear axial spring. To develop the idea of control for cable robots with elastic cables, a robust PID control for cable driven robots with ideal rigid cables is firstly de...
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ژورنال
عنوان ژورنال: Acta Physica Polonica A
سال: 2011
ISSN: 0587-4246,1898-794X
DOI: 10.12693/aphyspola.119.553